CommonAdapter

最新推荐文章于 2021-05-31 15:57:41 发布

chenjie0932

最新推荐文章于 2021-05-31 15:57:41 发布

阅读量389

点赞数

CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/chenjie0932/article/details/81562964

本文介绍了一种通用适配器的设计与实现方法，该适配器适用于Android平台的数据展示，通过抽象类的方式简化了ListView等组件的使用，提高了代码的复用性和维护性。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

package com.yimiao100.sale.yimiaomanager.view.adapter;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

import java.util.List;

/**
 * Created by johpo on 2016/12/2 0002.
 */
public abstract class CommonAdapter<T> extends BaseAdapter {
    protected final int mItemLayoutId;
    protected LayoutInflater mInflater;
    protected Context mContext;
    protected List<T> mDatas;

    public CommonAdapter(Context context, List<T> mDatas, int itemLayoutId){
        this.mContext = context;
        this.mInflater = LayoutInflater.from(mContext);
        this.mDatas = mDatas;
        this.mItemLayoutId = itemLayoutId;
    }

    @Override
    public int getCount()
    {
        return mDatas.size();
    }

    @Override
    public T getItem(int position)
    {
        return mDatas.get(position);
    }

    @Override
    public long getItemId(int position)
    {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent)
    {
        final ViewHolder viewHolder = getViewHolder(position, convertView,
                parent);
        convert(viewHolder, getItem(position));
        return viewHolder.getConvertView();

    }

    public abstract void convert(ViewHolder helper, T item);

    private ViewHolder getViewHolder(int position, View convertView,
                                     ViewGroup parent)
    {
        return ViewHolder.get(mContext, convertView, parent, mItemLayoutId,
                position);
    }
}